#define PLUGIN_VERSION 		"1.0"

#pragma semicolon 1
#pragma newdecls required

#include <sourcemod>
#include <sdktools>

#define CVAR_FLAGS				FCVAR_NOTIFY

bool g_bVoice_Talking;

public Plugin myinfo =
{
	name = "[ANY] Voice - Sound Attenuation",
	author = "SilverShot",
	description = "Reduces game volume when someone talks.",
	version = PLUGIN_VERSION,
	url = ""
}

/*
	Requred:

	1. VoiceHook extension by Accelerator74
	https://forums.alliedmods.net/showthread.php?t=279231

	or

	2. VoiceannounceEX plugin by Franc1sco
	https://forums.alliedmods.net/showthread.php?t=245384

	TODO:
	retrieve ambient entities
	add silence to a weapon

	env_soundscape

	ambient_generic
	GetEntPropString(entity, Prop_Data, "m_iszSound", sSound, sizeof(sSound));
	int len = strlen(sSound);
	if (len > 4 && (StrEqual(sSound[len-3], "mp3") || StrEqual(sSound[len-3], "wav")))



*/

ConVar g_hCvarAllow;
ConVar g_hCvarAmbFactor;
ConVar g_hCvarNormFactor;

bool g_bCvarAllow;
float g_fAmbFactor;
float g_fNormFactor;
//Handle g_hTimer;

public void OnPluginStart()
{
	g_hCvarAllow =			CreateConVar(	"l4d_sound_atten_allow",			"1",			"0=Plugin Off, 1=Plugin On.", CVAR_FLAGS);
	g_hCvarAmbFactor =		CreateConVar(	"l4d_sound_atten_factor_ambience",	"0.5",			"Decrease ambient sounds volume by this factor when someone is speaking", CVAR_FLAGS);
	g_hCvarNormFactor =		CreateConVar(	"l4d_sound_atten_factor_normal",	"0.5",			"Decrease normal sounds volume by this factor when someone is speaking", CVAR_FLAGS);



	//RegConsoleCmd("sm_test", CmdTest, "");

	g_hCvarAllow.AddChangeHook(ConVarChanged_Cvars);
	g_hCvarAmbFactor.AddChangeHook(ConVarChanged_Cvars);
	g_hCvarNormFactor.AddChangeHook(ConVarChanged_Cvars);

	GetCvars();
}

public Action CmdTest(int client, int args)
{
	char sSound[PLATFORM_MAX_PATH];
	int ent = -1;

	while (-1 != (ent = FindEntityByClassname(ent, "ambient_generic")))
	{
		GetEntPropString(ent, Prop_Data, "m_iszSound", sSound, sizeof(sSound));
		//SetEntProp(ent, Prop_Send, "nv_m_ambientVolume", 1);


		//SetEntProp(ent, Prop_Data, "m_iVolume", 1);
		//SetEntProp(ent, Prop_Data, "m_iSoundLevel", 1);

		//AcceptEntityInput(ent, "StopSound");
		//SetVariantFloat(2.0);
		//AcceptEntityInput(ent, "Volume");

		PrintToChatAll("found: %i - %s. Level: %i", ent, sSound, GetEntProp(ent, Prop_Data, "m_iSoundLevel"));
	}

	PrintToChatAll("sound search completed");

	//int len = strlen(sSound);
	//if (len > 4 && (StrEqual(sSound[len-3], "mp3") || StrEqual(sSound[len-3], "wav")))

	return Plugin_Handled;
}

public void ConVarChanged_Cvars(Handle convar, const char[] oldValue, const char[] newValue)
{
	GetCvars();
}

void GetCvars()
{
	g_bCvarAllow = g_hCvarAllow.BoolValue;
	g_fAmbFactor = g_hCvarAmbFactor.FloatValue;
	g_fNormFactor = g_hCvarNormFactor.FloatValue;

	SetHook();
}

void SetHook()
{
	static bool bHooked;

	if (g_bCvarAllow) {
		if (!bHooked) {
			AddNormalSoundHook(view_as<NormalSHook>(SoundHookNormal));
			AddAmbientSoundHook(view_as<AmbientSHook>(SoundHookAmbient));
			//AddTempEntHook("Impact", TE_Hook_ShotgunShot);
			//AddTempEntHook("Shotgun Shot", TE_Hook_ShotgunShot);
			//AddTempEntHook("Fire Bullets", TE_Hook_ShotgunShot);

			/*
			if (g_hTimer == INVALID_HANDLE)
			{
				if (GetExtensionFileStatus("VoiceHook.ext") == 1)
				{
					g_hTimer = CreateTimer(2.0, Timer_UpdateSpeaking, _, TIMER_REPEAT);
				}
			}
			*/
			bHooked = true;
		}
	} else {
		if (bHooked) {
			RemoveNormalSoundHook (view_as<NormalSHook>(SoundHookNormal));
			RemoveAmbientSoundHook(view_as<AmbientSHook>(SoundHookAmbient));

			/*
			if (g_hTimer != INVALID_HANDLE)
			{
				KillTimer(g_hTimer);
				g_hTimer = INVALID_HANDLE;
			}
			*/
			bHooked = false;
		}
	}
}

public Action TE_Hook_ShotgunShot(const char[] te_name, const int[] Players, int numClients, float delay)
{
	PrintToChatAll(te_name);
	return Plugin_Stop;
}

/*
public Action Timer_UpdateSpeaking(Handle timer)
{
	g_bVoice_Talking = false;
}

public void OnClientSpeaking(int client) // VoiceHook
{
	g_bVoice_Talking = true;
}
*/

public void OnClientSpeakingStart(int client) // VoiceHook v3.0
{
	g_bVoice_Talking = true;
}

public void OnClientSpeakingEx(int client) // VoiceannounceEX
{
	g_bVoice_Talking = true;
}

public void OnClientSpeakingEnd(int client) // VoiceannounceEX & VoiceHook v3.0
{
	g_bVoice_Talking = false;
}

public Action SoundHookNormal(int clients[64], int &numClients, char sample[PLATFORM_MAX_PATH], int &entity, int &channel, float &volume, int &level, int &pitch, int &flags)
{
	if( g_bVoice_Talking )
	{
		//PrintToChatAll("Normal: \x03%s \x01decreased: (volume) \x04%.2f => %.2f\x01, (level) \x04%i => %i", sample, volume, volume * g_fNormFactor, level, RoundToCeil(level * g_fNormFactor));
		volume *= g_fNormFactor;
		level = RoundToCeil(level * g_fNormFactor);
		flags |= SND_CHANGEVOL;
		return Plugin_Changed;
	}
	return Plugin_Continue;
}

public Action SoundHookAmbient(int clients[64], int &numClients, char sample[PLATFORM_MAX_PATH], int &entity, int &channel, float &volume, int &level, int &pitch, int &flags)
{
	if( g_bVoice_Talking )
	{
		//PrintToChatAll("Ambient: \x03%s \x01decreased: (volume) \x04%.2f => %.2f\x01, (level) \x04%i => %i", sample, volume, volume * g_fNormFactor, level, RoundToCeil(level * g_fNormFactor));
		volume *= g_fAmbFactor;
		level = RoundToCeil(level * g_fNormFactor);
		flags |= SND_CHANGEVOL;
		return Plugin_Changed;
	}
	return Plugin_Continue;
}